﻿310 
  

  

  INTRODUCTION 
  TO 
  BOTAOT 
  

  

  the 
  early 
  spring 
  growth 
  of 
  new 
  parts 
  of 
  the 
  plant 
  or 
  hi 
  re- 
  

   plenishing 
  old 
  parts, 
  or 
  may 
  even 
  be 
  retained 
  until 
  another 
  

   vcar. 
  The 
  passage 
  of 
  sugar-laden 
  sap 
  is 
  through 
  the 
  youngest 
  

   fihrovascular 
  bundles. 
  By 
  boring 
  a 
  hole 
  through 
  the 
  dead 
  

   bark 
  into 
  tliis 
  region, 
  sap 
  may 
  be 
  withdrawn. 
  When 
  it 
  is 
  se- 
  

   cured 
  in 
  sufliciciitly 
  large 
  quantities, 
  the 
  water 
  may 
  be 
  evap- 
  

   orated 
  from 
  it 
  until 
  thick 
  sirup 
  or 
  sugar 
  remains. 
  Ordinarily 
  

  

  Sii.uar-maple 
  trees 
  which 
  have 
  been 
  tapped 
  every 
  year 
  for 
  over 
  

   eighty 
  years 
  

  

  The 
  t 
  rees 
  lire- 
  tapped 
  liy 
  horinti 
  into 
  them 
  so 
  ;is 
  to 
  reach 
  the 
  sapwood 
  ; 
  then 
  a 
  tuhu- 
  

  

  lar 
  spile 
  is 
  driven 
  into 
  the 
  hole, 
  and 
  a 
  hncket 
  is 
  suspended 
  upon 
  a 
  hook 
  oil 
  the 
  

  

  spile. 
  In 
  this 
  \\a\ 
  the 
  sap 
  is 
  can-lit 
  in 
  the 
  bucket 
  

  

  a 
  good 
  sugar-maple 
  tree 
  produces 
  15 
  or 
  -20 
  gallons 
  of 
  sap 
  

   in 
  one 
  season, 
  though 
  this 
  amount 
  may 
  be 
  greatly 
  exceeded 
  

   by 
  especially 
  good 
  trees. 
  The 
  percentage 
  of 
  sugar 
  in 
  the 
  sap 
  

   varies 
  widely 
  in 
  different 
  seasons 
  and 
  between 
  different 
  trees 
  

   in 
  the 
  same 
  season, 
  but 
  usually 
  it 
  is 
  from 
  '2 
  to 
  o 
  per 
  cent. 
  

   Individual 
  trees 
  produce 
  in 
  one 
  season 
  from 
  half 
  a 
  pound 
  to 
  7 
  

   or 
  8 
  pounds 
  of 
  sugar. 
  .Maple 
  sirup 
  is 
  the 
  partially 
  evaporated 
  

  

  